REGIONAL -- Local officials are saying the threat of Zika virus transmission in the Shelby County area and the state of Iowa is extremely low. Yet there is a risk to Iowans when they travel to Zika-affected areas. The continued transmission of Zika virus in the Caribbean, Central and South America, and a very small area of Miami, FL, means those who travel to these areas of local, active transmission should be aware of the Zika risk.